/Engine/Source/Developer/GeometryProcessingInterfaces/Public/GeometryProcessingInterfaces/CombineMeshInstances.h
FMeshLODSetrepresents a list of LOD meshes that are used by one or more instances (eg like a StaticMesh, but could be other sources).
struct FMeshLODSet
TArray< constF...
ReferencedMeshLODs
FKAggregateGeom
SimpleCollisionShapes